Are license plate stickers legal?

Are you tempted to show your pride for your favorite department by sticking a sticker on your license plate?

The law is clear: it is "normally" forbidden to put stickers on your license plate.
However, law enforcement generally tolerates this practice as long as you remain courteous with them and it does not hinder vehicle identification or cause accidents.

In 2009, the new Vehicle Registration System was defined by the decree of February 9. According to Article 9, the form of the territorial identifier is free, which means you can choose your department and its inherent official regional logo.
However, Article 10 prohibits modifying the plate, as it must remain legible so that law enforcement can identify you without difficulty.
Infringement is punishable by a 4th class fine, ranging from 90 to 375€.

Annexes 2 to 5 stipulate that the territorial identifier is optional.
You can therefore have plates without a territorial identifier to the right of your mineralogical identifier.
Also note that the department number no longer appears on the registration certificate. Furthermore, while the left part of the plate must imperatively have a reflective blue background bearing the "F" and the European symbol, the right part of the territorial identifier does not necessarily have a reflective blue background.

So, if you want to display your attachment to your favorite department, make sure your sticker does not hinder the readability of your license plate.